John wants to make some phone calls within the US, to Canada,to France and to Germany....

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John wants to make some phone calls within the US, to Canada,to France and to Germany. The rates per minute for these calls vary for the different countries. Use the information in the following table to determine the rates. The table below shows the number of minutes he used for each country from January to April, and the money spent (Total charge) in each month Month Call time in the US (min) January 15 February 20 March 10 April 12 Call time To Germany (min) 10 524 4 Call time To Canada (min) 6 3 5 10 If x represents the rate in $/ min for calls within the US. y represents the rate $/ min for calls to Germany. z represents the rate$/ min for calls to Canada. t represents the rate $/ min for calls to France. Call time To France (min) 5 4 5 1 Total charge in $ $ 273 $ 266 $ 167 $ 227 1) Write a mathematical model for the problem. This is going to be a system of linear equation with unknown x, y, z, and t (the rates). 2) Find the rate for each country. < solve the system of linear equation using PYTHON> John wants to make some phone calls within the US, to Canada,to France and to Germany. The rates per minute for these calls vary for the different countries. Use the information in the following table to determine the rates. The table below shows the number of minutes he used for each country from January to April, and the money spent (Total charge) in each month Month Call time in the US (min) January 15 February 20 March 10 April 12 Call time To Germany (min) 10 524 4 Call time To Canada (min) 6 3 5 10 If x represents the rate in $/ min for calls within the US. y represents the rate $/ min for calls to Germany. z represents the rate$/ min for calls to Canada. t represents the rate $/ min for calls to France. Call time To France (min) 5 4 5 1 Total charge in $ $ 273 $ 266 $ 167 $ 227 1) Write a mathematical model for the problem. This is going to be a system of linear equation with unknown x, y, z, and t (the rates). 2) Find the rate for each country. < solve the system of linear equation using PYTHON>

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Mathematical model is given as follows 15x 10y 6z 5t 273 20x 5y 3z 4t 266 1... View the full answer